Roll mounting



Dec. 30, 1958 J. R. THOMAS 2,866,258

ROLL MOUNTING Filed May 18. 1956 mmvrox. Zazzes 4%. kyalllafi' United States Patent ROLL MOUNTING James R. Thomas, Prospect Heights, Ill., assignor to Joseph A. Weber, Mount Prospect, Ill.

Application May 18, 1956, Serial No. 585,816

3 Claims. (Cl. 29-123) This invention relates to a new and improved roll mounting.

The mounting and dismounting of rolls of all types has long been a problem. As a rule rolls have to be mounted by sliding over a supporting shaft. And, the sliding over a shaft generally requires the removal of the bearing or supporting structure on at least one end of the device.

It is therefore a principal object of this invention to provide for quick and easy roll mounting and dismounting without sliding lengthwise of a supporting shaft.

An important object of this invention is the provision of roll mounting means wherein the roll may be con veniently moved radially inwardly onto and/ or outwardly from a carrying shaft.

Another important object of this invention is to supply a quickly attachable and detachable roll to and from a supporting shaft.

Still another important object of this invention is to equip a roll for shaft mounting and including radially disposed aligned slots in spaced apart roll end discs and having spring biased means associated with at least one of said slots whereby the roll may be locked with the shaft or removed as desired.

Another and still further important object of this invention is to provide for radial mounting of a roll on a shaft and means at each end of the roll for maintaining the roll either locked or loose with respect to said shaft.

Other and further important objects and advantages of this invention will become apparent from the disclosures in the following specification and accompanying drawings.

In the drawings:

Figure 1 is a top plan view of a portion of a stencil printing machine having the roll mounting device of this invention incorporated therein.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a sectional view taken on the line 3--3 of Figure 1.

Figure 4 is another sectional view of the roller similar to that of Figure 2 but shown in the process of being removed from the carrying shaft.

As shown in the drawings:

The reference numeral indicates generally a frame supporting structure of a stencil printing machine similar to that shown in my prior Patent 2,713,304 and in my copending application entitled Stencil Printing Machine having Serial No.' 577,344, filed April 10, 1956. The supporting structure has spaced apart side members 11 and 12 and an intermediate top surface 13.

The top surface 13 of the stencil printing machine is equipped with laterally spaced apart track like guides 14 and 15 for guiding paper or the like through the machine and to have the stencil material imprinted thereon. Hand screws 16 and 17 pass through the track guides and into the table top 13 and are for the purpose of adice justing the track guides 14 and 15 to any desired lateral spacing to therefore accommodate any width of paper stock.

A paper cut-off mechanism 18 is provided at the discharge end of the stencil printing machine. The cutoff is used to cut off the imprinted paper stock fed through the machine following imprinting. The machine also has a stencil carrying roll 19 on which the novel features of this invention are incorporated. The roll 19 is carried on a shaft 20 journaled in the frame 10. A knurled hand wheel 21 is afiixed to the outer end of the shaft 20. A sprocket 22 is mounted on the shaft 20 and is adapted to be power driven by a chain 23.

The quickly mounted and demounted roll 19 of this invention is provided with spaced apart end discs 24 and 25 and has an adjoining perforated metal cover 26. The perforated cover extends just a portion of the distance around the cylindrical surface of the roll and is welded .or otherwise fastened at its ends to the spaced end discs 24 and 25. An ink reservoir 27 is located within the roll beneath the perforated peripheral cover and an ink input opening is closed by a removable screw cap 28.

A cover cloth 29 is positioned over the outside of the perforated metal cover by means hereafter to be described. A rigid metal binding edge 30 is provided along one side of the cover cloth 29 and carries spaced apart springs 31 and 32. These springs are attached to anchoring posts 33 and 34 respectively on the discs 24 and 25. Similarly a rigid metal binding 35 is provided over the opposite side edge of the cover cloth to facilitate uniform stretching of the cloth over the perforated metal portion of the roll. Aligned holes 36 and 37 in the discs 24 and 25 respectively are arranged and constructed to receive and hold the metal covered edge 35 of the cloth cover.

A clamp 38 for a stencil (not shown) is positioned along one marginal'side of the cloth cover 29. The clamp is employed for the purpose of holding a stencil on one side thereof while the remainder lies over the ink discharging cloth 29. The clamp 38 includes an elongated arm 39 to engage a stencil and grip or clamp it against the cloth 29. An angularly spaced arm 40 of the clamp projects radially inwardly of the roll 19 and has laterally spaced apart blocks 41 and 41a welded or otherwise attached thereto. A rod 42 is journaled in the end spaced discs 24 and 25 and is continuous therebetween. A bent end portion 43 of the rod 42 lies flat against the end disc 24. A spring 44 is arranged to urge the clamp 38 outwardly about the rod 42 as a hinge. Thus as the rod 42 and its hand engaging member 43 is rotated there is a concurrent rotation or swinging movement of the clamp 38. The spring biases the clamp 38 toward an open position and thus means must be provided for holding the clamp in stencil locking position during operation of the machine. This is accomplished by a locking member 45 with angularly disposed arms 46 and 47 in the form of a bell-crank. This bell crank locking member 45 is hinged at 48 to the outer surface of the end disc 24. It will thus be apparent that in the position of the locking member as shown in the drawing the long arm 47 thereof closely abuts the bent end 43 of the rod 42 to thus prohibit rotation of the rod 42 and thereupon hold the clamping member 38 in stencil gripping position. When the locking member 45 is swung outwardly about its hinge 48 by pulling outwardly on the hand engaging arm 47 the rod end 43 is released to swing outwardly by the action of the spring 44 with a resultant opening of the clamp 38.

The spaced apart end discs 24 and 25 are provided with radially disposed, aligned slots 49 and 50 respectively. These radial slots are open to the circumferential sur- -faces of the roll discs 24 and '25 and extend inwardly thereof to the positions as shown at 51 and 52. The inner ends 51 and 52 of these slots are coincident with .the path of the cylindrical shaft 20. Thus the roll 19 may be mounted onto the shaft by a radial sliding movement through the radial slots 24 and 25.

A lever '53 is hinged to the end disc 24 at 54. A spring 55 has one end thereof attached to a post 56 on the lever 53. The other end of the spring is attached to the end disc 24 at 57. The spring is arranged and constructed to impart a rotational urging to the lever 53. The inner end 58 of the lever 53 in one position thereof engages the shaft 20 to thus hold it in the inner end of the radial slot 49. The outer end 59 of the lever 53 acts as a thumb engaging portion and permits manual swinging of the lever. As shown in the drawing an operator's hand has a thumb 6t) engaging the portion 59 of the lever 53 and aforefinger 61 wrapped around and gripping the roll to hold it tightly for removal from or mounting on the shaft 20. When it is desired to remove the roll from the shaft the operator squeezes the end 59 of the lever to cause it to swing outwardly against the action of the spring 55 to thereupon move the inner end 58 of the lever out of the plane of the radial slot 49 and permit removal of the roll from the shaft.

A member 62 is affixed to the shaft 20 adjacent the end disc 25. A pin 63 in the member 62 lies parallel to the shaft 20 but spaced radially outwardly therefrom. A hole 64 in the end disc is adapted to receive the pin 63 as a socket. The pin 63 is integral with the shaft 20 and when it engages the socket 64 in the roll disc 25 there is a locked interengagement between shaft and roll.

In the operation of the device of this invention the roll 19 is mounted on the shaft 20 by cocking it slightly and moving the end disc 25 into abutting relationship with the member 62 on the shaft at the same time sliding the roll over the shaft by dropping it on the radial slot 50. Thus there is an initial engagement of the pin 63 with the socket 64 to fasten the one end of the roll to the shaft. Next, the other end of the roll is dropped over the shaft 20 through the radial slot 49 while the operator by his thumb 60 depresses the outer end 59 of the lever 53 to clear the path of the radial slot 49. When the shaft 20 reaches the inner end 51 of the slot 49 the lever 53 is released so the inner end 58 thereof clamps the roll to the shaft. Now the roll 19 is firmly gripped by the interengagement of the pin 63 and socket 64 at one end and is held by the spring biased lever 53 at the other end. The roll is thus mountable over the shaft with-out endwise sliding, or without removal of bearings or other supporting structure. Thus by operation of the lever 53 and the employment of aligned radial slots rolls may be mounted or dismounted as desired. The quick attachable roll has been shown with a stencil printing machine, but it shoud be understood it may operate just as effectively with any roll means wherein convenient mounting is necessary to effective use.

I am aware that many details of construction may be varied throughout a wide range without departing from the principles disclosed herein and I therefore do not propose limiting the patent granted hereon otherwise than as necessitated by the appended claims.

What is claimed is:

1. A roll for quickly mounting onto a shaft for concurrent rotation with said shaft and for similarly quickly dismounting said roll from said shaft, said roll comprising spaced apart end discs, said discs having aligned radial notches, the inner ends of said notches lying in a common axis, said inn-er ends of the radial notches coinciding with a shaft for said roll when said roll is in mounted position on said shaft, means associated with said end discs for removably holding said roll on said shaft, said means including a lever arm hinged on one of said discs and said lever arm having one end there-of arranged to abut said shaft on the side thereof adjacent the aligned radial notch to effect a locking of said roll on Said shaft, said shaft having a member thereon extending radially outwardly thereof, said member having a pin extending therefrom and disposed parallel to said shaft, and the other of said end discs having an end opening arranged and constructed to receive said pin.

2. A device as set forth in claim 1 in which a spring is associated with said lever arm and said one disc for normal biasing of said lever arm toward said locking position.

3. A device as set forth in claim 2 in which said lever arm has a portion thereof extending beyond the circumference of said one disc for .easy engagement by an operators thumb for hinging of said lever arm out of locking position against the action of the spring.

References Cited in the file of this patent UNITED STATES PATENTS 557,912 Steiger Apr. 7, 1896 969,268 Gowing Sept. 6, 1910 2,346,163 Hiles Apr. 11, 1944 2,393,651 Metzner Jan. 29, 1946 FOREIGN PATENTS 616,642. France Oct. 30, 1926 

